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b3fc24268a39212b21b292655e609f7f9a477a7a
gimp/app/operations/layer-modes/gimp-layer-modes.c
Jehan b3fc24268a Issue #5888: GIMP 2.99.2 crash when using brush in multiply mode. 
The GimpOperationLayerMode variable member in DoLayerBlend was not
properly constructed. C++ class constructor can be called by creating
object variables, but with GObject, we have to do it with pointers.
Otherwise here we were only allocating the memory for the struct, but
not actually calling any initialization functions.

Also it would seem that the struct was not initialized at zero, as the
space_fish variable was not NULL when it should (i.e. even with same
composite and blend space), hence composite_to_blend_fish was not NULL
and since the operation was not a valid GeglOperation when entering
gimp_operation_layer_mode_real_process(), we crashed.
Not sure how it went unseen for so long!

So instead let's make the layer_mode class member into a pointer. As
such, I have to properly allocate and free it. This is also why I am
adding a copy constructor which will ref the pointer (otherwise we unref
more than we ref as the default copy constructor would just copy the
pointer).
2020-11-10 01:11:01 +01:00

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimp-layer-modes.c
* Copyright (C) 2017 Michael Natterer <mitch@gimp.org>
* Øyvind Kolås <pippin@gimp.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <glib-object.h>
#include <gegl.h>
#include "../operations-types.h"
#include "gegl/gimp-babl.h"
#include "gimpoperationlayermode.h"
#include "gimpoperationlayermode-blend.h"
#include "gimp-layer-modes.h"
typedef struct _GimpLayerModeInfo GimpLayerModeInfo;
struct _GimpLayerModeInfo
{
GimpLayerMode layer_mode;
const gchar *op_name;
GimpLayerModeBlendFunc blend_function;
GimpLayerModeFlags flags;
GimpLayerModeContext context;
GimpLayerCompositeMode paint_composite_mode;
GimpLayerCompositeMode composite_mode;
GimpLayerColorSpace composite_space;
GimpLayerColorSpace blend_space;
};
/* static variables */
static const GimpLayerModeInfo layer_mode_infos[] =
{
{ GIMP_LAYER_MODE_NORMAL_LEGACY,
.op_name = "gimp:normal",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_TRIVIAL,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_DISSOLVE,
.op_name = "gimp:dissolve",
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_TRIVIAL,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_UNION
},
{ GIMP_LAYER_MODE_BEHIND_LEGACY,
.op_name = "gimp:behind",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_PAINT |
GIMP_LAYER_MODE_CONTEXT_FILTER,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_MULTIPLY_LEGACY,
.op_name = "gimp:multiply-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_SCREEN_LEGACY,
.op_name = "gimp:screen-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_OVERLAY_LEGACY,
.op_name = "gimp:softlight-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_DIFFERENCE_LEGACY,
.op_name = "gimp:difference-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_ADDITION_LEGACY,
.op_name = "gimp:addition-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_SUBTRACT_LEGACY,
.op_name = "gimp:subtract-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_DARKEN_ONLY_LEGACY,
.op_name = "gimp:darken-only-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_LIGHTEN_ONLY_LEGACY,
.op_name = "gimp:lighten-only-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_HSV_HUE_LEGACY,
.op_name = "gimp:hsv-hue-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_HSV_SATURATION_LEGACY,
.op_name = "gimp:hsv-saturation-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_HSL_COLOR_LEGACY,
.op_name = "gimp:hsl-color-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_HSV_VALUE_LEGACY,
.op_name = "gimp:hsv-value-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_DIVIDE_LEGACY,
.op_name = "gimp:divide-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_DODGE_LEGACY,
.op_name = "gimp:dodge-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_BURN_LEGACY,
.op_name = "gimp:burn-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_HARDLIGHT_LEGACY,
.op_name = "gimp:hardlight-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_SOFTLIGHT_LEGACY,
.op_name = "gimp:softlight-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_GRAIN_EXTRACT_LEGACY,
.op_name = "gimp:grain-extract-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_GRAIN_MERGE_LEGACY,
.op_name = "gimp:grain-merge-legacy",
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_COLOR_ERASE_LEGACY,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_color_erase,
.flags = GIMP_LAYER_MODE_FLAG_LEGACY |
GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_SUBTRACTIVE,
.context = GIMP_LAYER_MODE_CONTEXT_PAINT |
GIMP_LAYER_MODE_CONTEXT_FILTER,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_OVERLAY,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_overlay,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_LCH_HUE,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_lch_hue,
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_LAB
},
{ GIMP_LAYER_MODE_LCH_CHROMA,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_lch_chroma,
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_LAB
},
{ GIMP_LAYER_MODE_LCH_COLOR,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_lch_color,
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_LAB
},
{ GIMP_LAYER_MODE_LCH_LIGHTNESS,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_lch_lightness,
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_LAB
},
{ GIMP_LAYER_MODE_NORMAL,
.op_name = "gimp:normal",
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_TRIVIAL,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
},
{ GIMP_LAYER_MODE_BEHIND,
.op_name = "gimp:behind",
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_PAINT |
GIMP_LAYER_MODE_CONTEXT_FILTER,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
},
{ GIMP_LAYER_MODE_MULTIPLY,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_multiply,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
},
{ GIMP_LAYER_MODE_SCREEN,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_screen,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_DIFFERENCE,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_difference,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_ADDITION,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_addition,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
},
{ GIMP_LAYER_MODE_SUBTRACT,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_subtract,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
},
{ GIMP_LAYER_MODE_DARKEN_ONLY,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_darken_only,
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
/* no blend_space: reuse composite space, no conversion thus fewer copies */
},
{ GIMP_LAYER_MODE_LIGHTEN_ONLY,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_lighten_only,
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
/* no blend_space: reuse composite space, no conversion thus fewer copies */
},
{ GIMP_LAYER_MODE_HSV_HUE,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_hsv_hue,
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_HSV_SATURATION,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_hsv_saturation,
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_HSL_COLOR,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_hsl_color,
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_HSV_VALUE,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_hsv_value,
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_DIVIDE,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_divide,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
},
{ GIMP_LAYER_MODE_DODGE,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_dodge,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_BURN,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_burn,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_HARDLIGHT,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_hardlight,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_SOFTLIGHT,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_softlight,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_GRAIN_EXTRACT,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_grain_extract,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_GRAIN_MERGE,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_grain_merge,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_VIVID_LIGHT,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_vivid_light,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_PIN_LIGHT,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_pin_light,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_LINEAR_LIGHT,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_linear_light,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_HARD_MIX,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_hard_mix,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_EXCLUSION,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_exclusion,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_LINEAR_BURN,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_linear_burn,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_LUMA_DARKEN_ONLY,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_luma_darken_only,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_LUMA_LIGHTEN_ONLY,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_luma_lighten_only,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL
},
{ GIMP_LAYER_MODE_LUMINANCE,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_luminance,
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
},
{ GIMP_LAYER_MODE_COLOR_ERASE,
.op_name = "gimp:layer-mode",
.blend_function = gimp_operation_layer_mode_blend_color_erase,
.flags = GIMP_LAYER_MODE_FLAG_SUBTRACTIVE,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR,
.blend_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
},
{ GIMP_LAYER_MODE_ERASE,
.op_name = "gimp:erase",
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_SUBTRACTIVE |
GIMP_LAYER_MODE_FLAG_ALPHA_ONLY |
GIMP_LAYER_MODE_FLAG_TRIVIAL,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
},
{ GIMP_LAYER_MODE_MERGE,
.op_name = "gimp:merge",
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_TRIVIAL,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
},
{ GIMP_LAYER_MODE_SPLIT,
.op_name = "gimp:split",
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_SUBTRACTIVE |
GIMP_LAYER_MODE_FLAG_ALPHA_ONLY |
GIMP_LAYER_MODE_FLAG_TRIVIAL,
.context = GIMP_LAYER_MODE_CONTEXT_ALL,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP,
.composite_mode = GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP
},
{ GIMP_LAYER_MODE_PASS_THROUGH,
.op_name = "gimp:pass-through",
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_TRIVIAL,
.context = GIMP_LAYER_MODE_CONTEXT_GROUP,
.composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
},
{ GIMP_LAYER_MODE_REPLACE,
.op_name = "gimp:replace",
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_TRIVIAL,
.context = GIMP_LAYER_MODE_CONTEXT_FILTER,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_space = GIMP_LAYER_COLOR_SPACE_RGB_LINEAR
},
{ GIMP_LAYER_MODE_ANTI_ERASE,
.op_name = "gimp:anti-erase",
.flags = GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE |
GIMP_LAYER_MODE_FLAG_ALPHA_ONLY,
.paint_composite_mode = GIMP_LAYER_COMPOSITE_UNION,
.composite_mode = GIMP_LAYER_COMPOSITE_UNION
}
};
static const GimpLayerMode layer_mode_group_default[] =
{
GIMP_LAYER_MODE_PASS_THROUGH,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_REPLACE,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_NORMAL,
GIMP_LAYER_MODE_DISSOLVE,
GIMP_LAYER_MODE_BEHIND,
GIMP_LAYER_MODE_COLOR_ERASE,
GIMP_LAYER_MODE_ERASE,
GIMP_LAYER_MODE_ANTI_ERASE,
GIMP_LAYER_MODE_MERGE,
GIMP_LAYER_MODE_SPLIT,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_LIGHTEN_ONLY,
GIMP_LAYER_MODE_LUMA_LIGHTEN_ONLY,
GIMP_LAYER_MODE_SCREEN,
GIMP_LAYER_MODE_DODGE,
GIMP_LAYER_MODE_ADDITION,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_DARKEN_ONLY,
GIMP_LAYER_MODE_LUMA_DARKEN_ONLY,
GIMP_LAYER_MODE_MULTIPLY,
GIMP_LAYER_MODE_BURN,
GIMP_LAYER_MODE_LINEAR_BURN,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_OVERLAY,
GIMP_LAYER_MODE_SOFTLIGHT,
GIMP_LAYER_MODE_HARDLIGHT,
GIMP_LAYER_MODE_VIVID_LIGHT,
GIMP_LAYER_MODE_PIN_LIGHT,
GIMP_LAYER_MODE_LINEAR_LIGHT,
GIMP_LAYER_MODE_HARD_MIX,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_DIFFERENCE,
GIMP_LAYER_MODE_EXCLUSION,
GIMP_LAYER_MODE_SUBTRACT,
GIMP_LAYER_MODE_GRAIN_EXTRACT,
GIMP_LAYER_MODE_GRAIN_MERGE,
GIMP_LAYER_MODE_DIVIDE,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_HSV_HUE,
GIMP_LAYER_MODE_HSV_SATURATION,
GIMP_LAYER_MODE_HSL_COLOR,
GIMP_LAYER_MODE_HSV_VALUE,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_LCH_HUE,
GIMP_LAYER_MODE_LCH_CHROMA,
GIMP_LAYER_MODE_LCH_COLOR,
GIMP_LAYER_MODE_LCH_LIGHTNESS,
GIMP_LAYER_MODE_LUMINANCE
};
static const GimpLayerMode layer_mode_group_legacy[] =
{
GIMP_LAYER_MODE_NORMAL_LEGACY,
GIMP_LAYER_MODE_DISSOLVE,
GIMP_LAYER_MODE_BEHIND_LEGACY,
GIMP_LAYER_MODE_COLOR_ERASE_LEGACY,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_LIGHTEN_ONLY_LEGACY,
GIMP_LAYER_MODE_SCREEN_LEGACY,
GIMP_LAYER_MODE_DODGE_LEGACY,
GIMP_LAYER_MODE_ADDITION_LEGACY,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_DARKEN_ONLY_LEGACY,
GIMP_LAYER_MODE_MULTIPLY_LEGACY,
GIMP_LAYER_MODE_BURN_LEGACY,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_OVERLAY,
GIMP_LAYER_MODE_SOFTLIGHT_LEGACY,
GIMP_LAYER_MODE_HARDLIGHT_LEGACY,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_DIFFERENCE_LEGACY,
GIMP_LAYER_MODE_SUBTRACT_LEGACY,
GIMP_LAYER_MODE_GRAIN_EXTRACT_LEGACY,
GIMP_LAYER_MODE_GRAIN_MERGE_LEGACY,
GIMP_LAYER_MODE_DIVIDE_LEGACY,
GIMP_LAYER_MODE_SEPARATOR,
GIMP_LAYER_MODE_HSV_HUE_LEGACY,
GIMP_LAYER_MODE_HSV_SATURATION_LEGACY,
GIMP_LAYER_MODE_HSL_COLOR_LEGACY,
GIMP_LAYER_MODE_HSV_VALUE_LEGACY
};
static const GimpLayerMode layer_mode_groups[][2] =
{
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_NORMAL,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_NORMAL_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_DISSOLVE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_DISSOLVE
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_BEHIND,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_BEHIND_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_MULTIPLY,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_MULTIPLY_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_SCREEN,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_SCREEN_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_OVERLAY,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_DIFFERENCE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_DIFFERENCE_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_ADDITION,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_ADDITION_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_SUBTRACT,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_SUBTRACT_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_DARKEN_ONLY,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_DARKEN_ONLY_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_LIGHTEN_ONLY,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_LIGHTEN_ONLY_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_HSV_HUE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_HSV_HUE_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_HSV_SATURATION,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_HSV_SATURATION_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_HSL_COLOR,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_HSL_COLOR_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_HSV_VALUE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_HSV_VALUE_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_DIVIDE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_DIVIDE_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_DODGE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_DODGE_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_BURN,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_BURN_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_HARDLIGHT,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_HARDLIGHT_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_SOFTLIGHT,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_SOFTLIGHT_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_GRAIN_EXTRACT,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_GRAIN_EXTRACT_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_GRAIN_MERGE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_GRAIN_MERGE_LEGACY
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_COLOR_ERASE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = GIMP_LAYER_MODE_COLOR_ERASE_LEGACY,
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_VIVID_LIGHT,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_PIN_LIGHT,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_LINEAR_LIGHT,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_HARD_MIX,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_EXCLUSION,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_LINEAR_BURN,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_LUMA_DARKEN_ONLY,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_LUMA_LIGHTEN_ONLY,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_LUMINANCE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_ERASE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_MERGE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_SPLIT,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_PASS_THROUGH,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1,
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_REPLACE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
},
{ [GIMP_LAYER_MODE_GROUP_DEFAULT] = GIMP_LAYER_MODE_ANTI_ERASE,
[GIMP_LAYER_MODE_GROUP_LEGACY ] = -1
}
};
/* public functions */
void
gimp_layer_modes_init (void)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (layer_mode_infos); i++)
{
gimp_assert ((GimpLayerMode) i == layer_mode_infos[i].layer_mode);
}
}
static const GimpLayerModeInfo *
gimp_layer_mode_info (GimpLayerMode mode)
{
g_return_val_if_fail (mode >= 0 && mode < G_N_ELEMENTS (layer_mode_infos),
&layer_mode_infos[0]);
return &layer_mode_infos[mode];
}
gboolean
gimp_layer_mode_is_legacy (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return FALSE;
return (info->flags & GIMP_LAYER_MODE_FLAG_LEGACY) != 0;
}
gboolean
gimp_layer_mode_is_blend_space_mutable (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return FALSE;
return (info->flags & GIMP_LAYER_MODE_FLAG_BLEND_SPACE_IMMUTABLE) == 0;
}
gboolean
gimp_layer_mode_is_composite_space_mutable (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return FALSE;
return (info->flags & GIMP_LAYER_MODE_FLAG_COMPOSITE_SPACE_IMMUTABLE) == 0;
}
gboolean
gimp_layer_mode_is_composite_mode_mutable (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return FALSE;
return (info->flags & GIMP_LAYER_MODE_FLAG_COMPOSITE_MODE_IMMUTABLE) == 0;
}
gboolean
gimp_layer_mode_is_subtractive (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return FALSE;
return (info->flags & GIMP_LAYER_MODE_FLAG_SUBTRACTIVE) != 0;
}
gboolean
gimp_layer_mode_is_alpha_only (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return FALSE;
return (info->flags & GIMP_LAYER_MODE_FLAG_ALPHA_ONLY) != 0;
}
gboolean
gimp_layer_mode_is_trivial (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return FALSE;
return (info->flags & GIMP_LAYER_MODE_FLAG_TRIVIAL) != 0;
}
GimpLayerColorSpace
gimp_layer_mode_get_blend_space (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return GIMP_LAYER_COLOR_SPACE_RGB_LINEAR;
return info->blend_space;
}
GimpLayerColorSpace
gimp_layer_mode_get_composite_space (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return GIMP_LAYER_COLOR_SPACE_RGB_LINEAR;
return info->composite_space;
}
GimpLayerCompositeMode
gimp_layer_mode_get_composite_mode (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return GIMP_LAYER_COMPOSITE_UNION;
return info->composite_mode;
}
GimpLayerCompositeMode
gimp_layer_mode_get_paint_composite_mode (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return GIMP_LAYER_COMPOSITE_UNION;
return info->paint_composite_mode;
}
const gchar *
gimp_layer_mode_get_operation_name (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return "gimp:layer-mode";
return info->op_name;
}
GeglOperation *
gimp_layer_mode_get_operation (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
GeglNode *node;
GeglOperation *operation;
if (! info)
info = layer_mode_infos;
node = gegl_node_new_child (NULL,
"operation", info->op_name,
NULL);
operation = gegl_node_get_gegl_operation (node);
g_object_ref (operation);
g_object_unref (node);
return operation;
}
GimpLayerModeFunc
gimp_layer_mode_get_function (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
static GimpLayerModeFunc funcs[G_N_ELEMENTS (layer_mode_infos)];
if (! info)
info = layer_mode_infos;
mode = info - layer_mode_infos;
if (! funcs[mode])
{
GeglNode *node;
GeglOperation *operation;
node = gegl_node_new_child (NULL,
"operation", info->op_name,
NULL);
operation = gegl_node_get_gegl_operation (node);
funcs[mode] = GIMP_OPERATION_LAYER_MODE_GET_CLASS (operation)->process;
g_object_unref (node);
}
return funcs[mode];
}
GimpLayerModeBlendFunc
gimp_layer_mode_get_blend_function (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return NULL;
return info->blend_function;
}
GimpLayerModeContext
gimp_layer_mode_get_context (GimpLayerMode mode)
{
const GimpLayerModeInfo *info = gimp_layer_mode_info (mode);
if (! info)
return 0;
return info->context;
}
GimpLayerMode *
gimp_layer_mode_get_context_array (GimpLayerMode mode,
GimpLayerModeContext context,
gint *n_modes)
{
GimpLayerModeGroup group;
const GimpLayerMode *group_modes;
gint n_group_modes;
GimpLayerMode *array;
gint i;
group = gimp_layer_mode_get_group (mode);
group_modes = gimp_layer_mode_get_group_array (group, &n_group_modes);
array = g_new0 (GimpLayerMode, n_group_modes);
*n_modes = 0;
for (i = 0; i < n_group_modes; i++)
{
if (group_modes[i] != GIMP_LAYER_MODE_SEPARATOR &&
(gimp_layer_mode_get_context (group_modes[i]) & context))
{
array[*n_modes] = group_modes[i];
(*n_modes)++;
}
}
return array;
}
static gboolean
is_mode_in_array (const GimpLayerMode *modes,
gint n_modes,
GimpLayerMode mode)
{
gint i;
for (i = 0; i < n_modes; i++)
{
if (modes[i] == mode)
return TRUE;
}
return FALSE;
}
GimpLayerModeGroup
gimp_layer_mode_get_group (GimpLayerMode mode)
{
if (is_mode_in_array (layer_mode_group_default,
G_N_ELEMENTS (layer_mode_group_default), mode))
{
return GIMP_LAYER_MODE_GROUP_DEFAULT;
}
else if (is_mode_in_array (layer_mode_group_legacy,
G_N_ELEMENTS (layer_mode_group_legacy), mode))
{
return GIMP_LAYER_MODE_GROUP_LEGACY;
}
return GIMP_LAYER_MODE_GROUP_DEFAULT;
}
const GimpLayerMode *
gimp_layer_mode_get_group_array (GimpLayerModeGroup group,
gint *n_modes)
{
g_return_val_if_fail (n_modes != NULL, NULL);
switch (group)
{
case GIMP_LAYER_MODE_GROUP_DEFAULT:
*n_modes = G_N_ELEMENTS (layer_mode_group_default);
return layer_mode_group_default;
case GIMP_LAYER_MODE_GROUP_LEGACY:
*n_modes = G_N_ELEMENTS (layer_mode_group_legacy);
return layer_mode_group_legacy;
default:
g_return_val_if_reached (NULL);
}
}
gboolean
gimp_layer_mode_get_for_group (GimpLayerMode old_mode,
GimpLayerModeGroup new_group,
GimpLayerMode *new_mode)
{
gint i;
g_return_val_if_fail (new_mode != NULL, FALSE);
for (i = 0; i < G_N_ELEMENTS (layer_mode_groups); i++)
{
if (is_mode_in_array (layer_mode_groups[i], 2, old_mode))
{
*new_mode = layer_mode_groups[i][new_group];
if (*new_mode != -1)
return TRUE;
return FALSE;
}
}
*new_mode = -1;
return FALSE;
}
const Babl *
gimp_layer_mode_get_format (GimpLayerMode mode,
GimpLayerColorSpace blend_space,
GimpLayerColorSpace composite_space,
GimpLayerCompositeMode composite_mode,
const Babl *preferred_format)
{
GimpLayerCompositeRegion composite_region;
/* for now, all modes perform i/o in the composite space. */
(void) mode;
(void) blend_space;
if (composite_space == GIMP_LAYER_COLOR_SPACE_AUTO)
composite_space = gimp_layer_mode_get_composite_space (mode);
if (composite_mode == GIMP_LAYER_COMPOSITE_AUTO)
composite_mode = gimp_layer_mode_get_composite_mode (mode);
composite_region = gimp_layer_mode_get_included_region (mode, composite_mode);
if (gimp_layer_mode_is_alpha_only (mode))
{
if (composite_region != GIMP_LAYER_COMPOSITE_REGION_UNION)
{
/* alpha-only layer modes don't combine colors in non-union composite
* modes, hence we can disregard the composite space.
*/
composite_space = GIMP_LAYER_COLOR_SPACE_AUTO;
}
}
else if (gimp_layer_mode_is_trivial (mode))
{
if (! (composite_region & GIMP_LAYER_COMPOSITE_REGION_DESTINATION))
{
/* trivial layer modes don't combine colors when only the source
* region is included, hence we can disregard the composite space.
*/
composite_space = GIMP_LAYER_COLOR_SPACE_AUTO;
}
}
switch (composite_space)
{
case GIMP_LAYER_COLOR_SPACE_AUTO:
/* compositing is color-space agnostic. return a format that has a fast
* conversion path to/from the preferred format.
*/
if (! preferred_format ||
gimp_babl_format_get_trc (preferred_format) == GIMP_TRC_LINEAR)
return babl_format_with_space ("RGBA float", preferred_format);
else
return babl_format_with_space ("R'G'B'A float", preferred_format);
case GIMP_LAYER_COLOR_SPACE_RGB_LINEAR:
return babl_format_with_space ("RGBA float", preferred_format);
case GIMP_LAYER_COLOR_SPACE_RGB_PERCEPTUAL:
return babl_format_with_space ("R'G'B'A float", preferred_format);
case GIMP_LAYER_COLOR_SPACE_LAB:
return babl_format_with_space ("CIE Lab alpha float", preferred_format);
}
g_return_val_if_reached (babl_format_with_space ("RGBA float", preferred_format));
}
GimpLayerCompositeRegion
gimp_layer_mode_get_included_region (GimpLayerMode mode,
GimpLayerCompositeMode composite_mode)
{
if (composite_mode == GIMP_LAYER_COMPOSITE_AUTO)
composite_mode = gimp_layer_mode_get_composite_mode (mode);
switch (composite_mode)
{
case GIMP_LAYER_COMPOSITE_UNION:
return GIMP_LAYER_COMPOSITE_REGION_UNION;
case GIMP_LAYER_COMPOSITE_CLIP_TO_BACKDROP:
return GIMP_LAYER_COMPOSITE_REGION_DESTINATION;
case GIMP_LAYER_COMPOSITE_CLIP_TO_LAYER:
return GIMP_LAYER_COMPOSITE_REGION_SOURCE;
case GIMP_LAYER_COMPOSITE_INTERSECTION:
return GIMP_LAYER_COMPOSITE_REGION_INTERSECTION;
default:
g_return_val_if_reached (GIMP_LAYER_COMPOSITE_REGION_INTERSECTION);
}
}
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